ASTROSAT CZTI

Data Quality Report

Orbit 41187

Creation date: 2024-06-27T22:25:35.551896
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_089T10_9000005614_41187cztM0_level2.fits modeM0/AS1A12_089T10_9000005614_41187cztM0_level2_quad_clean.evt
Size (bytes)277,153,92071,406,720
Size264.3 MB 68.1 MB
Events in quadrant A2,196,696491,475
Events in quadrant B2,267,936495,949
Events in quadrant C3,449,761438,257
Events in quadrant D2,016,443440,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090051
B096141
C0129751
D091301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A420680.190204%
B4206681.616738%
C420642110.009510%
D4206521.236329%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 4206 4206 2 2 0.05% 0.05%
B 4206 4206 51 51 1.21% 1.21%
C 4205 4205 385 385 9.16% 9.16%
D 4206 4206 46 46 1.09% 1.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 354511 3706.2 466 457 95.5
A 12 189 17322 176.54 466 457 95.5
A 2 79 11967 120.49 466 457 95.5
B 0 229 233715 2602.86 461 449 89.6
B 5 255 166291 1850.52 461 449 89.6
B 0 186 42922 473.92 461 449 89.6
C 9 54 1297612 12770.26 436 439 101.6
C 0 10 275800 2710.84 436 439 101.6
C 15 214 171887 1687.85 436 439 101.6
D 13 249 162026 1460.57 450 438 110.6
D 2 249 86118 774.45 450 438 110.6
D 12 233 25416 225.77 450 438 110.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter